<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <form>
        <input id="file-upload" type="file" name="file" webkitdirectory onchange="fileUpload">
    </form>
</body>
<script>
    function fileUpload(files) {
        console.log(files);
    }
</script>
</html>